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Electroluminescence from organic/inorganic heterostructure device based on blends of PVK and water–sol CdSe nanocrystals

Paper ID Volume ID Publish Year Pages File Format Full-Text
27951 44052 2007 7 PDF Available
Title
Electroluminescence from organic/inorganic heterostructure device based on blends of PVK and water–sol CdSe nanocrystals
Abstract

Organic/inorganic heterostructure devices were fabricated with polymer material poly(N-vinylcarbazole) (PVK) and CdSe nanocrystals synthesized in aqueous solution. Stable electroluminescence (EL) was obtained from the organic/inorganic heterostructure devices with different mass ratios of CdSe to PVK and under different applied voltages. With increasing applied voltages, the ratio of EL from CdSe nanocrystals to that from PVK decreased, and the color of the emission could be tuned from yellow to white. By changing the mass ratios of CdSe to PVK and the applied voltages, we obtained a pure white color from the heterostructure device with the CIE coordinates of (0.313, 0.336) for the mass ratio of CdSe:PVK = 9:1 at 24 V. The EL emission from the devices is mainly attributed to the incomplete energy transfer and carrier trapping directly on CdSe nanocrystals.

Keywords
Electroluminescence; CdSe nanocrystals; Organic/inorganic; Poly(N-vinylcarbazole)
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Electroluminescence from organic/inorganic heterostructure device based on blends of PVK and water–sol CdSe nanocrystals
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 192, Issue 1, 15 November 2007, Pages 1–7
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us